Sectional die



ica.,

Application 1'ed"May' 29,

To @ZZ whom t may concern.: Y

Be it known that I, GnoRen'H. DANmLs, a

citizen of they United States, residing at tion in any field for whichitv is adapted by"V `the nature or my improvements.:

An important object of my invention' ist to provide a die built-upofinterchangeable* sections so that provision may be made for;-

'performing blanking, forming, punchingo'rfYAY shearing operationssingly, or a combination of said operations successively withoutv thenecessity for setting up' the die between said operations.

Another important object omy invention is to provide for the readyremoval of a worn punch or die member, Without-neces-w sitating therenewal of the'entire die. p

Still another object orimportancey is' to"v provide for standardizingthe'parts required in any given shop; so that there may bev kept instock an adequate, interchangeable set or sets of such parts suited tothe exigencies of the work in that'shop,` and -reqnirin'g a minimumnumber ofdie'blocks.

In providing for the above obj ectsaccord'- ingly Ihave devisedanovelarrangement"oi die blocks which'lI term a'die chase', coinprisinga male and female member each constructed andv arranged to receiveinter-- changeably the constituent partsmakin'g up the punch and dierequired'to Iperform anygiven operation or series of operations, and-v Iprovide also standardized auxiliary partsfor use in filling in thespaces ofV thechase members not occupied by the punch and'die`V membersproper; and-I also-provide-standardized members to ser-ve 21S-strippersguides.

The variousv features oflmfyv invention-wil? be villustrated anddescribedfully infthe" a'c-f companyingdrawings-'andspecilication-and--pointedout in the'claims.

In the drawings5-Figure lfis a view in end elevation of a sectional dieinthe-construction of' which myA improvements have-been Specicaten ofLetters Patent.

sneTIoNAL" DIE.

Patentedv J an. 3, 1922.

191s. serial No.- 237,192.

embodied; Fig. 2V is a view in vertical section uponthe line 'x2- 002 ofFig. 3; Fig. Bvis a aplan viewer the female member ofthe die shown inFigs; l and 2; Fig. 4 isa perspective view uponan enlarged scale of oneof tlieguide and stripper memberstaken separately; Fig. 5 is a" similarview-in perspective 'of one 'of the spacing members, showing thequoinportion ofthe' structure for retainin'g purposes; Fig. 6 is a similarviewof a `modified'torm of spacing member; Fig. 7 isa-plan viewsimilarto Fig. 3 illustrating another application of my novel principle usingavcentral master block.

In the embodiment or' my invention selected lfor illustration anddescription to permit'readyand complete understanding of my;improvements, the part designated by the retereneecharacter l is'themale member ofa' die, and the reference character 2 designatesthe'iemalemember, these parts being of any suitable structure to carry myimprovements'into effect, and in the instance illustrated the parts thusdesignated-comprise' respectively each a chase or frame of metal, of`generally rectangular form, having a central 'opening to vreceive theoperatingand spacing members constituting the sectional die proper; inaccordance with my invention."

Ihavefsele'cted for illustration a sectional die 'provided lwith `punchland' die members suitable. to carryout 'the operation of punching,shearing and marking on such articles as'platel clips, the'barconstituting the work blankf from which said 'clips' are formed being"show-n in" broken lines and indicated by the-"reference character SinEFig. 2, while the operating parts ofthe male' member are designatedrespectively by the reference chafraeters4;5`,'6, 7 and8,thelastmentioned being a shearing blade, while the others are punchessuitablyjpositioned each to perform its-requiredoperation', thesepunches passing throughf a lubricating trough V33.

Inffaccordance with-myinvention I provide holding members for each ofthese instrume"ntalities,1 the holding members bearing respectively fthereference numerals 14, 15g-16,17 andl 18?* Theholding'member may beAformed* in'tegrally'v withv the operating member a's in'the case of themember desig-` Hated-18, Where`that-can be done'conveniently;` orfeachpunching member may be securedby 'suitable-ineanstoa holding-member"such as those designated 14 to 17 respectively, the advantage of theseparate holder being that where a series of punches having standardshanks can be provided, they may be -secured interchangeably tostandardized holding members, and thus the number of holding members maybe considerably less than the number of the punching members proper, anda greater variety of holding members of different sizes may thus beadapted to a similar great variety of punching members.

Any suitable means' may be provided to retain the holding members in thepunching chase, and as one convenient form of con'struction for thispurpose I have shown a plurality of set screws 9 passing through theframework-of the chase into engagement with bars 10 arranged todistribute the pressure of the set screws over the adjacent members ofthe die, whether the latter are holders for the punching parts proper,vor are merely spacing members, thev latter being designated by thereference characters 11 and 12, the members 12 being arranged to receiveguides 13 to `keep the parts of the die in alinement, these being of anysuitable contour and being shown as cylindrical posts in the instanceillustrated, their funetion being that of such well-known guides in theusual die, although it will be observed that my sectional die structurepermits of changing the position of these guide members so that they maybe located where they will impart the greatest rigidity to thecooperating punch and die parts while avoiding interference with theoperation, and this will be readily understood when it is consideredthat it might be desirable to perform a punching operation at thecorners occupied by these guide members in the illustration, in whichevent my sectional structure would permit the ready relocation of theguide members at al different portion of the die.

The guides 13 are carried by members 113 within the female chase member2, having spacing members 11, 21, 22 and 31 interposed between them andthe female die members 50 and 51the latter comprising female die membersproper', while holding members therefor bear the reference characters150 and 151.

Set screws 19 and bars 20 may be provided similar in purpose andfunction to the set screws 9 and bars 10 already described bove withreference to .the male die mem- The spacing members 11 and 12 are ofapproximately the same size in the instance illustrated, but largermembers 21 and smaller members 22 may be employed as desired, and thissubdivision may be carried to any extent required, the character 31designating a series of very small members immediately surrounding theholding members 150 and 151. The filling members are preferablysubstantially square in cross-section as shown.

lin accordance with a notable feature of my invention., thisstandardization of sectional parts permits the provision of suchauxiliary members as the guide and stripping members designated by thereference characters 34, comprising preferably a shank or holdingportion 35 of approximately the same size as the adjacent spacingmembers 31, while the guide portion proper 311 for the work blank may beof any suitable size and contourl to direct the work piece 3 as itpasses through the die, an overhanging portion 36 serving to strip thework when the punch is raise l have shown at 37 a series of punchingmembers, provided with face numbers, to perform the operation ofimpressing any desired number or other identilication mark upon the workpiece 3, these members being shown adjacent to the region ofroperationof the shear members 18, and serving to cooperate with the latterin-cutting olf the work after it. has been stamped. The spacing block 41of somewhat shorter length is shown, to clear the cutting portion of theshear member 8, and similarly the spacing members 71 may be short inorder to permit the completed work o fall freely at the region ofdischarge.

The member designated by the reference character 61 is a stop carried bytwo arms 62 secured to the discharge end of the female die chase, themember 61 being a bar placed in the path of the bar or other work blankunder treatment, so that when the latter is fed forward it will strikethe bar 61, but after the work is completed and the work piece fallsdown it will pass under the bar 61 and between the brackets 62 and bedischarged freely from the die.

1 prefer to provide substantially all of the constituent members of thedies with means to aid in their retention at a uniform height within thechase membersl and 2, as shown, and any suitable form of retaining meansmay be employed, one such convenient form of construction being providedat 30 which designates' quoin-like projections upon the respectivemembers, in position to enter retentivelygrooves 40 upon contiguousmembers, this quoin and groove arrangement being carried through theentire series of members and operating'in a manner clearly illustratedin the drawings, especially in Figure 5 which shows one of thespacing'members 21 taken separately, with the quoins 30 and grooves 40plainly indicated. -As a modification of this arrangement, the membersmay have only grooves as indicated at 130 in Figure 6, which shows amodified form of spacing member bearing the reference character 121, andwhen thus constructed I have proposed to utilize a separate lockingmember 140 of suitable diameter and length to enter opposed grooves incontiguous members serving the same purpose as the quoin projections 3()already described.

Figure 7 illustrates one application of my sectional improvements, inwhich a relatively large central master block or spacing member 211 is`shown having openings 202 to reduce the weight, and peripheral grooves240 to be entered by the retaining quoins 230 upon female die members200 and corner spacing blocks 212, the spacing member 211 having on twoof its sides a quoin ridge 330 to enter grooves 340 upon the female dieblocks 210 contiguous therewith.

Having illustrated and described my invention thus fully and suitablemeans by which the same may be carried into eect, I wish it understoodthat I do not limit myself to the specific materials and structuralforms selected for illustration and description, nor in general do Ilimit myself otherwise than as set forth in the claims read inconnection with this specification.

`What I claim as new and desire to secure by Letters Patent of theUnited States is 1. In combination, two complementary sectional dieseach comprising a die holder, members for performing a desired operationin conjunction with the corresponding member of the other sectional die,pieces surrounding said members for filling the space between saidmembers and said die holders whereby said members may be disposedlaterally in any desired position with reference to said die holder, andmeans for securing said filling pieces and said members Within the dieholder.

2. A sectional die comprising a plurality of chases, male punchingmembers having holding members and means to secure the same in one ofsaid chases with filling pieces therefor, female punching members,filling pieces and means to hold the same in said other chase, andretaining means comprising quoins and grooves upon said membersrespectively.

3. In combination, cooperating complementary sectional dies eachcomprising a die holder, a plurality of members for performing a desiredoperation in conjunction with those of the other die, pieces surroundingeach member yfor filling the space between said member and the dieholder for securing said member in any desired position, certain of saidcomplementary filling pieces being provided with complementary guideposts and guide openings whereby the guides may be positioned as desiredwithin said die holders.

4. In combination, a sectional die comprising a female die holder, aplurality of separate die members, pieces surrounding said members forfilling the space between said members and the die holder for securingsaid member in any desired position, certain of said filling piecesbeing provided with laterally extending heads disposed adjacent the diemembers to act as stripping members, and means for securing the diemembers and the filling pieces within the die holder.

In testimony whereof I have hereunto signed my name in the presence oftwo subscribing witnesses.

GEORGE H. DANIELS.

Witnesses:

HARRY Gr. DUNKER, CHARLES S. JONES.

